385238197 has 2 divisors, whose sum is σ = 385238198. Its totient is φ = 385238196.

The previous prime is 385238171. The next prime is 385238213. The reversal of 385238197 is 791832583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237591396 + 147646801 = 15414^2 + 12151^2 .

It is a cyclic number.

It is not a de Polignac number, because 385238197 - 2¹¹ = 385236149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385238597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192619098 + 192619099.

It is an arithmetic number, because the mean of its divisors is an integer number (192619099).

Almost surely, 2^385238197 is an apocalyptic number.

It is an amenable number.

385238197 is a deficient number, since it is larger than the sum of its proper divisors (1).

385238197 is an equidigital number, since it uses as much as digits as its factorization.

385238197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 46.

The square root of 385238197 is about 19627.4857534020. The cubic root of 385238197 is about 727.6286327183.

The spelling of 385238197 in words is "three hundred eighty-five million, two hundred thirty-eight thousand, one hundred ninety-seven".